ID: 42628
Comment by: admin at ifyouwantblood dot de
Reported By: jortac2002 at yahoo dot com dot mx
Status: Open
Bug Type: Scripting Engine problem
Operating System: WINDOWS XP PROFESSIONAL
PHP Version: 5.2.4
New Comment:
This is the thing with floating numbers, just as the manual states:
It is quite usual that simple decimal fractions like 0.1 or 0.7
cannot be converted into their internal binary counterparts without a
little loss of precision.
The follwing works as you would expect it therefore:
<?
$tree = 366.22;
$one = 1519.36;
$two = $one - $tree;
$four = $two + $tree;
$difer = $one - $four;
echo "one " . $one . " equals four " . $four . "<br>";
if ($four == $one) {
echo "THEY ARE EQUAL <br>";
}
else {
echo "THEY ARE NOT EQUAL DIFFERENCE " . $difer . "<br>";
}
?>
Previous Comments:
------------------------------------------------------------------------
[2007-09-11 19:44:27] jortac2002 at yahoo dot com dot mx
Description:
------------
I have the following code :
It is very simple code, and the result is very stange because
amounts are the same but result shows "NOT EQUAL"
Reproduce code:
---------------
<html>
<body>
<?
$one = 1519.36;
$two = 1153.14;
$tree = 366.22;
$four = $two + $tree;
$difer = $one - $four;
echo "one " . $one . " equals four " . $four . "<br>";
if ($four == $one) {
echo "THEY ARE EQUAL <br>";
}
else {
echo "THEY ARE NOT EQUAL DIFFERENCE " . $difer . "<br>";
}
?>
</body>
</html>
Expected result:
----------------
THEY ARE EQUAL
Actual result:
--------------
THEY ARE NOT EQUAL DIFFERENCE -2.737367544323E-013
------------------------------------------------------------------------
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Edit this bug report at http://bugs.php.net/?id=42628&edit=1
